I have a similar theory. I have worked with children with Autism for 7 years, and some of their behaviors mimic people on an LSD trip - DMT like. I believe that the Sun is changing and we are moving into a solar maximum. Throughout history, humans have evolved and changed, but our evolution is marked by moments of 'punctuated equilibrium'. Events of dramatic change in our biological existence. I believe these punctuated equilibrium events are connected to Solar maximums, that the Sun shoots out particles that affect out Pineal gland which may produce more DMT. I think that some children with Autism (there are a lot of children placed on the spectrum that I believe are misdiagnosed and thus confuse the observations) are actually more evolved in the sense that their Pineal gland has been activated or enhanced by the solar change.
I think DMT is not an hallucinogen, but rather, it removes the restraints and blinders put on our consciousness so that we can perceive even more in our world. Humans have horrible vision, hearing and sense of smell relative to most other mammals - what if this slight increased production in DMT enhances our perceptions more? Our connection to things we currently can't see? Our 6th sense?
Just a theory......
But, think of this..........the Neanderthals probably would not have noticed the Homo Sapiens being born around, them, just probably thought they were quirky with flatter foreheads. We are constantly evolving. We didn't stop at Homo Sapien Sapien.............but what shall the next batch be called?